i have bought these filter bags for a long time, and feel the last bunch i got had changed and not for the better.....

Great product 9/4/2014

Reviewer: Robert

I have a whisper filter that works great. My main use for these is they fit perfect in my sump.

This 12 Pack of Large Whisper Bio-Bags 8/16/2014

Reviewer: DiscusMan

I have to say - That over the many years of using these filter cartridges, their value, quality and exceptional mechanical filtration have stayed the same. And that they have provided my 15 Discus tanks with the biological filtration they need, by keeping the helpful bacterial colonies healthy so my Discus stay alive for years to come.

Great Value 8/15/2014

Reviewer: Matt

Great filter that I have used for years. It is so cheap to replace them as needed. I am going to use these until I no longer have fish!

Good value 8/11/2014

Reviewer: Mr. Swordtail.

Exact same bags as Top Fin, so you can substitute (Top Fin frame is slightly different, but also usable). Density has declined over the years, but still the best value out there. Also same size as one of the Biowheel, but cheaper.

Good Filters 7/24/2014

Reviewer: CM

I've always used Bio bags and found them to be the easiest and the best

Bio Bag Filters 2/9/2014

Reviewer: Ted

great filters

Great price 1/28/2014

Reviewer: Chris

Great price and easy to use. I won't purchase any other filter cartridge.

bio bag 12/13/2013

Reviewer: joe

easy to use works great very good price

Whisper Bio-Bag Filters 12/5/2013

Reviewer: Ruth

A great filter with activated charcoal. Have used them for many years

Whisper Bio-Bag Filters 12/4/2013

Reviewer: reggie

Easy to use & are efficient. Best Price in town! (and out of town!)

excellent product good price 12/4/2013

Reviewer: johnny 2x

could be quiter but otherwise excellent

Good filters 9/25/2013

Reviewer: Chris Principe

LIke these filters and keeps the tank clean

Same great quality - 5 stars 7/20/2013

Reviewer: Jan

I have been using these filter cartridges for more than 10 years in all 4 of my aquariums, and have not seen any change in quality (as one reviewer stated). I am able to rinse and re-use these one time to extend their use. When comparing both quality and cost, I have found these to be the best filters/filter cartridges on the market

Filters 2/11/2013

Reviewer: Mary

I use these filters all the time. Easy to put together and a great price.

Changed over the years 2/4/2013

Reviewer: Ed

I have been using tetra power filters for the last 26 years on six tanks. I used to be able to empty the charcoal, rinse them out and reuse them once or twice before replacing them. Now, for the last few years they are a once use and fall apart. It can get expensive!

Changed over the years 2/4/2013

Reviewer: Ed

I have been using tetra power filters for the last 26 years on six tanks. I used to be able to empty the charcoal, rinse them out and reuse them once or twice before replacing them. Now, for the last few years they are a once use and fall apart. It can get expensive!

excellent filter cartridges 8/9/2012

Reviewer: Jan

I have 4 aquariums and use these filters in all of them. They keep the water clean and clear, catching even the tiniest bit of debris. I highly recommend both the filter cartridges and the Whisper Power Filter.